CN105384450A - Production method of aluminum silicon sol reinforced silicon carbide kiln furniture - Google Patents
Production method of aluminum silicon sol reinforced silicon carbide kiln furniture Download PDFInfo
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- CN105384450A CN105384450A CN201510761613.1A CN201510761613A CN105384450A CN 105384450 A CN105384450 A CN 105384450A CN 201510761613 A CN201510761613 A CN 201510761613A CN 105384450 A CN105384450 A CN 105384450A
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- silicon
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- carbide
- silicon carbide
- kiln furniture
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- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 229910010271 silicon carbide Inorganic materials 0.000 title claims abstract description 73
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 60
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 30
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 30
- 239000002245 particle Substances 0.000 claims abstract description 26
- 239000000203 mixture Substances 0.000 claims abstract description 20
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 239000011230 binding agent Substances 0.000 claims abstract description 9
- 239000011159 matrix material Substances 0.000 claims abstract description 9
- 230000032683 aging Effects 0.000 claims abstract description 7
- 238000010304 firing Methods 0.000 claims abstract 3
- 239000007790 solid phase Substances 0.000 claims description 18
- 238000007493 shaping process Methods 0.000 claims description 7
- 239000012071 phase Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 abstract description 5
- 238000000465 moulding Methods 0.000 abstract 3
- 238000001035 drying Methods 0.000 abstract 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 19
- 239000000919 ceramic Substances 0.000 description 10
- 230000035939 shock Effects 0.000 description 10
- 239000000758 substrate Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000011800 void material Substances 0.000 description 4
- 208000037656 Respiratory Sounds Diseases 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052863 mullite Inorganic materials 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- HMUNWXXNJPVALC-UHFFFAOYSA-N 1-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C(CN1CC2=C(CC1)NN=N2)=O HMUNWXXNJPVALC-UHFFFAOYSA-N 0.000 description 2
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 2
- LDXJRKWFNNFDSA-UHFFFAOYSA-N 2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound C1CN(CC2=NNN=C21)CC(=O)N3CCN(CC3)C4=CN=C(N=C4)NCC5=CC(=CC=C5)OC(F)(F)F LDXJRKWFNNFDSA-UHFFFAOYSA-N 0.000 description 2
- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 2
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 2
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- YLZOPXRUQYQQID-UHFFFAOYSA-N 3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]propan-1-one Chemical compound N1N=NC=2CN(CCC=21)CCC(=O)N1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F YLZOPXRUQYQQID-UHFFFAOYSA-N 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000010415 colloidal nanoparticle Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 229910003465 moissanite Inorganic materials 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 229910052575 non-oxide ceramic Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/6303—Inorganic additives
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
- C04B2235/3218—Aluminium (oxy)hydroxides, e.g. boehmite, gibbsite, alumina sol
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5427—Particle size related information expressed by the size of the particles or aggregates thereof millimeter or submillimeter sized, i.e. larger than 0,1 mm
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/80—Phases present in the sintered or melt-cast ceramic products other than the main phase
Abstract
The invention discloses a production method of aluminum silicon sol reinforced silicon carbide kiln furniture. With silicon carbide particles as a matrix as well as silicon dioxide sol and aluminium oxide sol as binding agents, the production method of the aluminum silicon sol reinforced silicon carbide kiln furniture sequentially comprises the following steps: 1) uniformly mixing the silicon carbide particles, silicon dioxide sol and aluminium oxide sol to obtain mixture, wherein the solid mass content of the silicon dioxide sol is 30-70%, and the solid mass content of the aluminum oxide sol is 10-40%; 2) ageing the mixture for 22-26 hours, and then moulding, wherein the moulding pressure is 120-160MPa; and then drying a product obtained through moulding for 10-14 hours in an environment at the temperature of 40-60 DEG C, and then firing for 72-96 hours at the temperature of 1450-1700 DEG C, so that the aluminum silicon sol reinforced silicon carbide kiln furniture is obtained.
Description
Technical field
The present invention relates to a kind of preparation method of refractory materials, specifically, is the production method that a kind of silicon-aluminum sol strengthens silicon carbide kiln furniture.
Background technology
Kiln furnitures refer in pyroprocess, are made up of refractory materials, product are played to the utensil of support, isolation, provide protection, comprise saggar, push pedal, refractory slab etc.The final performance quality of kiln furnitures performance on product has important impact.Consider the problems such as the Working environment of Hightemperature Kiln Furniture, qualified kiln furnitures must meet following condition: chemical stability, fire-resistant and thermal shock resistance under good mechanical behavior under high temperature, high temperature.The kiln furnitures that modern industry uses are generally synthetic materials ceramic kiln furniture, usually have the multiple refractory materialss such as SiC, mullite, corundum, trichroite.
Current carbofrax material has become the non-oxide ceramic material widely used.Silicon carbide is a kind of compound of typical covalent bonds.Silicon carbide ceramics is a kind of high-temperature structural material, not only has high strength and hardness, also has high high-temp stability, wear-resisting resistance to, the advantage such as acid-alkali-corrosive-resisting, good thermal shock, low-expansion coefficient, high thermal conductivity, creep resistance and antioxidant property are good.Along with the technology of preparing of silicon carbide powder and the progress of ceramic normal pressure densification sintering technique, silicon carbide ceramics industrial boom, thyrite has been widely used in industrial circle and the national defense industry such as machinery, metallurgy, petrochemical complex, aviation, electronics.
In addition, belong to hard brittle material with the same silicon carbide ceramics of other pottery, its room temperature strength is low, fracture toughness property is low.The further mechanical enhancer of silicon carbide ceramics kiln furnitures is also an important research direction of kiln furnitures all the time, and conventional schedule of reinforcement mainly comprises particulate reinforcement, transformation toughening, crystal whisker toughened etc.Common treatment process introduces nano particle in the base, and the effects such as consequent residual stress field is toughness reinforcing, microcrack evolution equation, crackle are bending, crack deflection, crackle fork, crackle bridging and crack pinning make ceramic matrix toughness become good.CN101857448A discloses the method for titanium dioxide sol reinforced corundum-mullite kiln furnitures.CN103787685A describes the method for silicon carbide whisker toughening silicon carbide goods.But adopt colloidal nanoparticles also not report silicon carbide ceramics is toughness reinforcing.
Summary of the invention
The technical problem to be solved in the present invention is to provide the production method that a kind of silicon-aluminum sol strengthens silicon carbide kiln furniture, invention introduces silicon-aluminum sol thus further mechanical property and the thermal shock resistance improving silicon carbide.
In order to solve the problems of the technologies described above, the invention provides a kind of silicon-aluminum sol and strengthen the production method of silicon carbide kiln furniture, take silicon-carbide particle as matrix, with silicon dioxide gel and alumina sol for binding agent, carries out following steps successively:
1), by silicon-carbide particle, silicon dioxide gel and alumina sol Homogeneous phase mixing, mixture is obtained;
The solid phase mass content of described silicon dioxide gel is 30% ~ 70% (being preferably 40 ~ 60%), and the solid phase mass content of described alumina sol is 10% ~ 40% (being preferably 10 ~ 35%);
The mass ratio of described silicon dioxide gel and silicon-carbide particle is 0.1% ~ 0.5% (being preferably 0.15 ~ 0.46%), the quality 0.5% ~ 3.5% (being preferably 0.92 ~ 2.6%) of alumina sol and silicon-carbide particle;
2), by mixture ageing mixture (that is, ambient temperatare is put) 22 ~ 26 hours (being such as 24 hours) aftershapings, forming pressure 120 ~ 160Mpa; Again by dry 10 ~ 14 hours (being such as 12 hours) in the environment of 40 ~ 60 DEG C of the gains after shaping, and then fire 72 ~ 96h in 1450 ~ 1700 DEG C (being preferably 1450 ~ 1650 DEG C), obtain silicon-aluminum sol and strengthen silicon carbide kiln furniture (goods).
Remarks illustrate: in the present invention, the combination of silicon dioxide gel and alumina sol is called silicon-aluminum sol.
The improvement of the production method of silicon carbide kiln furniture is strengthened: the particle diameter of described silicon-carbide particle is 1 ~ 2mm as silicon-aluminum sol of the present invention.
The further improvement of the production method of silicon carbide kiln furniture is strengthened: described step 1 as silicon-aluminum sol of the present invention) in, the wet mixing 0.5 ~ 2 hour in mixer of silicon-carbide particle, silicon dioxide gel and alumina sol, thus realize Homogeneous phase mixing.
Advantage of the present invention utilizes silicon-aluminum sol to be uniformly distributed in silicon carbide substrate, the effects such as binding agent can be played on the one hand thus promote the shaping of silicon carbide ceramics and sintering, on the other hand, silicon-aluminum sol can be converted into silica-alumina gel, and in sintering process, the mullite of needle-like can be formed at silicon carbide substrate situ, thus improve silicon carbide ceramics mechanical property and antioxidant property (main relevant with thermal shock resistance).In sum, invention introduces silicon-aluminum sol thus improve further the toughness of silicon carbide, compressive strength, folding strength and thermal shock resistance.
Embodiment
Embodiment 1, a kind of silicon-aluminum sol strengthen the production method of silicon carbide kiln furniture, with particle diameter be 1 ~ 2mm silicon-carbide particle for matrix, with solid phase mass content be 50% silicon dioxide gel and solid phase mass content be that the alumina sol of 20% is for binding agent; Wherein silicon dioxide gel quality is 0.15% of silicon carbide-based weight, and alumina sol quality is 0.92% of silicon carbide-based weight; Its processing step is as follows:
1) according to the above ratio by the wet mixing 1 hour in mixer of silicon-carbide particle and silicon-aluminum sol (that is, silicon dioxide gel and alumina sol), mixture is obtained;
2) by mixture ageing mixture 24 hours aftershapings, forming pressure 120MPa.Again the sample after shaping to be placed in 40 DEG C of environment dry 12 hours, then to fire 4 days (96h) at 1450 DEG C, obtain silicon-aluminum sol and strengthen silicon carbide kiln furniture (hereinafter referred to as goods).
Remarks illustrate: these goods are specifically of a size of 5 cm x 5 cm x 20 centimetres.Its volume density 2.5 ~ 2.7g/cm
3, void content 10 ~ 12%, maximum deflection power 6 ~ 10kN, folding strength 20 ~ 30MPa; Thermal shock resistance (1100 DEG C × 20min, air cooling) is more than 30 times.
Embodiment 2, a kind of silicon-aluminum sol strengthen the production method of silicon carbide kiln furniture, are matrix by being of a size of 1 ~ 2mm silicon-carbide particle, with solid phase mass content be 60% silicon dioxide gel and solid phase mass content be that the alumina sol of 35% is for binding agent; Silicon dioxide gel quality is 0.31% of silicon carbide-based weight, and alumina sol quality is 1.70% of silicon carbide-based weight; Its processing step is as follows:
1), according to the above ratio by the wet mixing 2 hours in mixer of silicon-carbide particle and silicon-aluminum sol, mixture is obtained;
2), by mixture ageing mixture 24 hours aftershapings (geomery is with embodiment 1), forming pressure 160MPa.Again the sample after shaping to be placed in 60 DEG C of environment dry 12 hours, then to fire 3 days (72h) at lower 1600 DEG C, obtain goods.
These goods are specifically of a size of 5 cm x 5 cm x 20 centimetres.Its volume density 2.6 ~ 2.7g/cm
3, void content 12 ~ 15%, maximum deflection power 8 ~ 10kN, folding strength 30 ~ 40MPa; Thermal shock resistance (1100 DEG C × 20min, air cooling) is more than 40 times.
Embodiment 3, a kind of silicon-aluminum sol strengthen the production method of silicon carbide kiln furniture, are matrix by being of a size of 1 ~ 2mm silicon-carbide particle, with solid phase mass content be 40% silicon dioxide gel and solid phase mass content be that the alumina sol of 10% is for binding agent; Silicon dioxide gel quality is 0.46% of silicon carbide-based weight, and alumina sol quality is 2.60% of silicon carbide-based weight; Its processing step is as follows:
1), according to the above ratio by the wet mixing 1.5 hours in mixer of silicon-carbide particle and silicon-aluminum sol, mixture is obtained;
2), by mixture ageing mixture 24 hours aftershapings (geomery is with embodiment 1), forming pressure 140MPa.Again the sample after shaping to be placed in 50 DEG C of environment dry 12 hours, then to fire 3 days at lower 1500 DEG C, obtain goods.
These goods are specifically of a size of 5 cm x 5 cm x 20 centimetres.Its volume density 2.6 ~ 2.7g/cm
3, void content 10 ~ 11%, maximum deflection power 10 ~ 12kN, folding strength 35 ~ 45MPa; Thermal shock resistance (1100 DEG C × 20min, air cooling) is more than 40 times.
Embodiment 4, a kind of silicon-aluminum sol strengthen the production method of silicon carbide kiln furniture, are matrix by being of a size of 1 ~ 2mm silicon-carbide particle, with solid phase mass content be 50% silicon dioxide gel and solid phase mass content be that the alumina sol of 30% is for binding agent; Silicon dioxide gel quality is 0.15% of silicon carbide-based weight, and alumina sol quality is 0.92% of silicon carbide-based weight; Its processing step is as follows:
1) according to the above ratio by the wet mixing 2 hours in mixer of silicon-carbide particle and silicon-aluminum sol, mixture is obtained;
2) by mixture ageing mixture 24 hours aftershapings (geomery is with embodiment 1), forming pressure 130MPa.Again the sample after shaping to be placed in 50 DEG C of environment dry 12 hours, then to fire 4 days at lower 1650 DEG C, obtain goods.
These goods are specifically of a size of 5 cm x 5 cm x 20 centimetres.Its volume density 2.5 ~ 2.7g/cm
3, void content 11 ~ 13%, maximum deflection power 7 ~ 10kN, folding strength 25 ~ 40MPa; Thermal shock resistance (1100 DEG C × 20min, air cooling) is more than 35 times.
The use of " solid phase mass content is the alumina sol of 10% " in comparative example 1-1, cancellation embodiment 3, all the other are equal to embodiment 3.
The use of " solid phase mass content is the alumina sol of 10% " in comparative example 1-2, cancellation embodiment 3, and, make the mass ratio of silicon dioxide gel and silicon carbide substrate into 1.11% by 0.46%.All the other are with embodiment 3.
Comparative example 1-3, made into " zirconia sol " by " alumina sol " in embodiment 3, solid load is constant, and all the other are equal to embodiment 3.
Comparative example 1-4, made into " zinc oxide colloidal sol " by " alumina sol " in embodiment 3, solid load is constant, and all the other are equal to embodiment 3.
The use of " solid phase mass content is the silicon dioxide gel of 40% " in comparative example 2-1, cancellation embodiment 3, all the other are equal to embodiment 3.
The use of " solid phase mass content is the silicon dioxide gel of 40% " in comparative example 2-1, cancellation embodiment 3, and make the mass ratio of alumina sol and silicon carbide substrate into 4.44% by 2.60%; All the other are equal to embodiment 3.
Comparative example 2-3, make the silicon dioxide gel in embodiment 3 into TiO 2 sol, solid load is constant, and all the other are equal to embodiment 3.
Comparative example 3-1, make the mass ratio of silicon dioxide gel and silicon carbide substrate in embodiment 3 into 1% by 0.46%; All the other are equal to embodiment 3.
Comparative example 3-2, make the mass ratio of alumina sol and silicon carbide substrate in embodiment 3 into 15% by 2.60%, all the other are equal to embodiment 3.
The contrast of the performance data of above-mentioned all comparative examples and embodiment 3 resulting product, is described in table 1 below:
Table 1
| Maximum deflection power (kN) | Folding strength (MPa) | Thermal shock resistance (1100 DEG C × 20min, air cooling) | |
| Embodiment 3 | 10-12 | 35-45 | More than 40 times |
| Comparative example 1-1 | 5-7 | 20-30 | Be no more than 25 times |
| Comparative example 1-2 | 7-10 | 28-35 | Be no more than 30 times |
| Comparative example 1-3 | 7-9 | 30-35 | Be no more than 35 times |
| Comparative example 1-4 | 7-9 | 30-35 | Be no more than 35 times |
| Comparative example 2-1 | 6-8 | 20-30 | Be no more than 25 |
| Comparative example 2-2 | 7-8 | 25-30 | Be no more than 30 times |
| Comparative example 2-3 | 7-9 | 25-35 | Be no more than 35 times |
| Comparative example 3-1 | 7-9 | 25-35 | Be no more than 35 times |
| Comparative example 3-2 | 6-8 | 20-25 | Be no more than 25 times |
Finally, it is also to be noted that what enumerate above is only several specific embodiments of the present invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be had.All distortion that those of ordinary skill in the art can directly derive from content disclosed by the invention or associate, all should think protection scope of the present invention.
Claims (4)
1. silicon-aluminum sol strengthens the production method of silicon carbide kiln furniture, it is characterized in that: take silicon-carbide particle as matrix, with silicon dioxide gel and alumina sol for binding agent, carries out following steps successively:
1), by silicon-carbide particle, silicon dioxide gel and alumina sol Homogeneous phase mixing, mixture is obtained;
The solid phase mass content of described silicon dioxide gel is 30% ~ 70%, and the solid phase mass content of described alumina sol is 10% ~ 40%;
The mass ratio of described silicon dioxide gel and silicon-carbide particle is 0.1% ~ 0.5%, and the mass ratio of alumina sol and silicon-carbide particle is 0.5% ~ 3.5%;
2), by mixture ageing mixture 22 ~ 26 hours aftershapings, forming pressure 120 ~ 160Mpa; Again by gains after shaping in the environment of 40 ~ 60 DEG C dry 10 ~ 14 hours, and then fire 72 ~ 96h in 1450 ~ 1700 DEG C, obtain silicon-aluminum sol and strengthen silicon carbide kiln furniture.
2. silicon-aluminum sol according to claim 1 strengthens the production method of silicon carbide kiln furniture, it is characterized in that: the particle diameter of described silicon-carbide particle is 1 ~ 2mm.
3. silicon-aluminum sol according to claim 1 and 2 strengthens the production method of silicon carbide kiln furniture, it is characterized in that: described step 1) in, the wet mixing 0.5 ~ 2 hour in mixer of silicon-carbide particle, silicon dioxide gel and alumina sol, thus realize Homogeneous phase mixing.
4. silicon-aluminum sol according to claim 3 strengthens the production method of silicon carbide kiln furniture, it is characterized in that: to be of a size of 1 ~ 2mm silicon-carbide particle for matrix, with solid phase mass content be 40% silicon dioxide gel and solid phase mass content be that the alumina sol of 10% is for binding agent; Silicon dioxide gel quality is 0.46% of silicon carbide-based weight, and alumina sol quality is 2.60% of silicon carbide-based weight; Firing temperature 1500 DEG C, firing time 72h.
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| CN105753501A (en) * | 2016-03-17 | 2016-07-13 | 武汉科技大学 | ZrSiO4-SiC porous ceramics and preparation method thereof |
| CN107935553A (en) * | 2017-12-17 | 2018-04-20 | 李巧珍 | A kind of preparation method of fire resistant environment-friendly pipe insulation material |
| CN110590341A (en) * | 2019-09-29 | 2019-12-20 | 武汉科技大学 | Sagger for sintering sol-combined lithium battery positive electrode material and preparation method thereof |
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| CN102775163A (en) * | 2012-07-25 | 2012-11-14 | 江苏省陶瓷研究所有限公司 | Silicon carbide-cordierite composite ceramic kiln furniture and preparation method thereof |
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| CN112292365A (en) * | 2018-06-29 | 2021-01-29 | 圣戈班工业陶瓷罗登塔尔股份有限公司 | Sagger-shaped receiving element, in particular sagger for burning powdery cathode material for lithium ion batteries, and mixture for said sagger |
| CN110590341A (en) * | 2019-09-29 | 2019-12-20 | 武汉科技大学 | Sagger for sintering sol-combined lithium battery positive electrode material and preparation method thereof |
| CN110590341B (en) * | 2019-09-29 | 2022-04-29 | 武汉科技大学 | Sagger for sintering sol-combined lithium battery positive electrode material and preparation method thereof |
| CN111423241A (en) * | 2020-03-31 | 2020-07-17 | 中冶焦耐(大连)工程技术有限公司 | Mullite brick with fiber toughening function and preparation method thereof |
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Denomination of invention: Production method of silicon aluminum sol reinforced silicon carbide kiln furniture Effective date of registration: 20231204 Granted publication date: 20180116 Pledgee: Zhejiang Anji Rural Commercial Bank Co.,Ltd. Xiaoyuan Branch Pledgor: ANJI KELING MAGNETIC MATERIAL Co.,Ltd. Registration number: Y2023330002947 |